DE4011758A1 - Bildverarbeitungsverfahren und einrichtung zu dessen durchfuehrung - Google Patents

Bildverarbeitungsverfahren und einrichtung zu dessen durchfuehrung

Info

Publication number
DE4011758A1
DE4011758A1 DE4011758A DE4011758A DE4011758A1 DE 4011758 A1 DE4011758 A1 DE 4011758A1 DE 4011758 A DE4011758 A DE 4011758A DE 4011758 A DE4011758 A DE 4011758A DE 4011758 A1 DE4011758 A1 DE 4011758A1
Authority
DE
Germany
Prior art keywords
picture element
edge
image
content
central
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
DE4011758A
Other languages
German (de)
English (en)
Other versions
DE4011758C2 (enrdf_load_stackoverflow
Inventor
Satoshi Yano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Publication of DE4011758A1 publication Critical patent/DE4011758A1/de
Application granted granted Critical
Publication of DE4011758C2 publication Critical patent/DE4011758C2/de
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformations in the plane of the image
    • G06T3/60—Rotation of whole images or parts thereof
    • G06T3/602—Rotation of whole images or parts thereof by block rotation, e.g. by recursive reversal or rotation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/40068—Modification of image resolution, i.e. determining the values of picture elements at new relative positions

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Processing (AREA)
DE4011758A 1989-04-12 1990-04-11 Bildverarbeitungsverfahren und einrichtung zu dessen durchfuehrung Granted DE4011758A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1090757A JP2813196B2 (ja) 1989-04-12 1989-04-12 画像処理装置

Publications (2)

Publication Number Publication Date
DE4011758A1 true DE4011758A1 (de) 1990-10-25
DE4011758C2 DE4011758C2 (enrdf_load_stackoverflow) 1993-04-29

Family

ID=14007479

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4011758A Granted DE4011758A1 (de) 1989-04-12 1990-04-11 Bildverarbeitungsverfahren und einrichtung zu dessen durchfuehrung

Country Status (3)

Country Link
US (1) US5117294A (enrdf_load_stackoverflow)
JP (1) JP2813196B2 (enrdf_load_stackoverflow)
DE (1) DE4011758A1 (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0463879A3 (en) * 1990-06-28 1992-08-05 Xerox Corporation Switching video signals
EP0488118A3 (en) * 1990-11-26 1993-03-24 Sharp Kabushiki Kaisha Image recording apparatus for high quality images
EP0641119A1 (en) * 1993-08-23 1995-03-01 Lexmark International, Inc. Image improvement after facsimile reception
US5611023A (en) * 1992-09-02 1997-03-11 Ricoh Company, Ltd. Apparatus and method for processing two-tone image data so as to smooth and magnify image
EP2680565A1 (en) * 2012-06-25 2014-01-01 Kyocera Document Solutions Inc. Image processing apparatus and image forming apparatus

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5404233A (en) * 1990-08-28 1995-04-04 Kyocera Corporation Method for smoothing image
JPH0568163A (ja) * 1991-06-18 1993-03-19 Canon Inc 画像形成装置
JPH05130383A (ja) * 1991-11-01 1993-05-25 Sanyo Electric Co Ltd 画像処理装置
US5258854A (en) * 1991-12-06 1993-11-02 Xerox Corporation Converting between write-white, write-black and neutral bitmaps
EP0622756B1 (en) * 1993-04-30 1999-06-23 Hewlett-Packard Company Method and apparatus for printing an enhanced image
US5583953A (en) * 1993-06-30 1996-12-10 Xerox Corporation Intelligent doubling for low-cost image buffers
DE19502997B4 (de) * 1994-02-01 2005-06-30 Ricoh Co., Ltd. Einrichtung und Verfahren zum Verarbeiten von Zweiton-Bilddaten
US5537495A (en) * 1994-03-11 1996-07-16 Hewlett-Packard Company Pixel correction and smoothing method
US5440407A (en) * 1994-03-11 1995-08-08 Hewlett-Packard Company Pixel correction and smoothing method
US5483355A (en) * 1994-03-11 1996-01-09 Hewlett-Packard Co. Pixel correctional and smoothing method
JP3294071B2 (ja) * 1995-08-01 2002-06-17 京セラ株式会社 画像形成方法及び画像形成装置
JPH09289584A (ja) * 1996-02-21 1997-11-04 Canon Inc 画像処理方法及び装置
KR100460825B1 (ko) * 2001-02-14 2004-12-09 테스텍 주식회사 지문이미지 취득방법
JP4500707B2 (ja) * 2004-03-24 2010-07-14 キヤノン株式会社 画像データ処理装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4280144A (en) * 1979-12-03 1981-07-21 International Business Machines Corporation Coarse scan/fine print algorithm
US4355337A (en) * 1979-02-22 1982-10-19 Ricoh Co., Ltd. Method of restoring pictures with high density
DE2834456C2 (de) * 1978-08-05 1986-01-09 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Einrichtung zur gemischten Aufzeichnung von Rasterbildern und Strichinformationen
DE3546337C2 (enrdf_load_stackoverflow) * 1985-03-07 1988-04-28 Dainippon Screen Mfg. Co., Ltd., Kyoto, Jp

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE283455C (enrdf_load_stackoverflow) *
US4873577A (en) * 1988-01-22 1989-10-10 American Telephone And Telegraph Company Edge decomposition for the transmission of high resolution facsimile images
US5001576A (en) * 1988-09-28 1991-03-19 Konica Corporation Image processor with improved discrimination between character image and tonal image
US4975785A (en) * 1989-08-04 1990-12-04 International Business Machines Corporation Pel resolution addressing conversion

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2834456C2 (de) * 1978-08-05 1986-01-09 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Einrichtung zur gemischten Aufzeichnung von Rasterbildern und Strichinformationen
US4355337A (en) * 1979-02-22 1982-10-19 Ricoh Co., Ltd. Method of restoring pictures with high density
US4280144A (en) * 1979-12-03 1981-07-21 International Business Machines Corporation Coarse scan/fine print algorithm
DE3546337C2 (enrdf_load_stackoverflow) * 1985-03-07 1988-04-28 Dainippon Screen Mfg. Co., Ltd., Kyoto, Jp

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0463879A3 (en) * 1990-06-28 1992-08-05 Xerox Corporation Switching video signals
EP0488118A3 (en) * 1990-11-26 1993-03-24 Sharp Kabushiki Kaisha Image recording apparatus for high quality images
US5289564A (en) * 1990-11-26 1994-02-22 Sharp Kabushiki Kaisha Image recording apparatus for providing high quality image
US5611023A (en) * 1992-09-02 1997-03-11 Ricoh Company, Ltd. Apparatus and method for processing two-tone image data so as to smooth and magnify image
US5812742A (en) * 1992-09-02 1998-09-22 Ricoh Compny, Ltd. Apparatus and method for processing two-tone image data so as to smooth image and convert each image pixel into a plurality of pixels
EP0641119A1 (en) * 1993-08-23 1995-03-01 Lexmark International, Inc. Image improvement after facsimile reception
EP2680565A1 (en) * 2012-06-25 2014-01-01 Kyocera Document Solutions Inc. Image processing apparatus and image forming apparatus

Also Published As

Publication number Publication date
JP2813196B2 (ja) 1998-10-22
DE4011758C2 (enrdf_load_stackoverflow) 1993-04-29
JPH02270470A (ja) 1990-11-05
US5117294A (en) 1992-05-26

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee